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    For each column of the CGridView, we can specify name, value, htmlOptions, cssClassExpression etc. In the declarations of the attributes value and cssClassExpression we can use the "special" variable $data, for example like this: 'value'=>'$data->author->username',.     Now we might want to use $data in the declaration of the htmlOptions attribute, which is normally not possible, to generate for example the tag <td id="3" class="name_3">, where 3 is the id of the data model for the current row, i.e. $data->id. That is, we want to be able to use: 'htmlOptions'=>array('id'=>'$data->id', 'class'=>'"name_{$data->id}"')     Here's a way to accomplish this...

There are good reasons to use Google's Content Delivery Network (CDN) to serve jQuery and jQuery UI on your site:

If you show a model (with a lot of attributes) partially in a CGridView, it can be helpful when the user can take a quick look at the full record with all attributes without displaying the view as a page and afterwards returning back to the gridview.

Since PHP is dynamically typed language, the way IDE may help you is limited.

There are situations in which Active Record will generate nonsense queries from what a nieve Yii user might think is reasonable code. One such situation is a CActiveDataProvider using CDbCriteria to get data from parent and 1:n child table with a condition on the child table.

If we want to set meta tags on a per page (controller-action) basis, we may use the clientScript application component.

I have seen a couple of articles about how to integrate external libraries to debug our PHP code (i.e. firePHP) but after you read this article you will realize that there is no need for such libraries when using Yii.

CMenu offers great functionality and the ability to customize just about every aspect of the output. There are many times when I need to create a drop down menu or simply modify the look to make the designers happy. Because this seems to be a common task for me, I figured I would share my code to create a very simple drop down menu that other people could use.

Validators extending from CValidator all have a property named message. You can set this property in the corresponding validation rule to customize the error message. For example, the following validation rule uses an error message that is different from the default one:

This is a simple example that will give you a base for designing a database driven menu system that will use CMenu to be rendered.